Era
1900-1999
2
20e siècle
2
20th century
2
1700-1799
1
1800-1899
1
1807-1870
1
1849-1877
1
1858-1942
1
1861-1865
1
1861-1865 (Guerre de Sécession)
1
1861-1865, Civil War
1
1877-1881
1
1887-1948
1
18e siècle
1
18th century
1
1901-1978
1
1961-
1
19e siècle
1
19th century
1
Civil War, 1861-1865
1
Geschichte 1900-1954
1
Pittsburgh
1